Shaft structure.



UNITED STATES PATENT OFFICE.

MILK A. ROSS, OFICHICAGO, ILLINOIS.

SHAFT, S'IRU CTUBE.

Original application filed June 16, 1916,

` particular servvicejwherejshafts rotate With- The outer raceway cured 11';` Ithe carrier-1 in berin gsi that arev supported ,by stationary bearing;carriers,` though` y the invention 1s' v not to be'- thus for its objectif the 'provision oflan improved assembly" of the` shaft and the bearingyelt'a?l limited., @The invention has ment or@ lements wherebytheparts .may be quicklyy '.as'sembled, disa'ssembled arid-li'ejI ventin illustrated' A and.; described in this application,` "which constitutes a' division of my' copfendi'ng application yfiled AJune 16,f '1916;*Vand` serially ynumbered 103,957, a whosev led with roller bca ring-structure is employed innerliiwwayi is adapted. to be con the shaft so as to rotatetherewith y means of my invention wherebyisuch raceway may readil'yjbe' slipped intcrand4 out of lace. is desirably' slidab y se` therefor and may be removed v`,and replaced together with. the first raceway. 'There isalso `desirably emloyed a sleeve'which intervenes between the shaft and the inner raceway and which takes :part 4in assembling such raceway with .i the "'Shalft.

I will explain my" invention more fully by reference to the accompanying drawing showing the preferred embodiment thereof and in which Figurelmis a view of the shaft of a dynamo-electricmachine`having bearings associated therewith in accordance with my invention; Fig..2 is a view on line 2 2 of Fig. 1; Fig. 3 is a view of component parts in separated relation; and Fig. 4 is a. perspective view illustrating the formation of the end faces of the inner raceway, such fo ation being similar upon both end faces. o that the bearing may be slipped upon the shaft with either end face outermost. i

Like parts are indicated by similar char- Specication of Letters Patent.

drawings, forming ak l ceived withinor engaged byl a '13 may-be i name-electric machine and i Patented Dec. 25, 1917.

Serial No, 103,957. Divided and this application tiled October 7, 191s. seria1No.1'24,2sa.

acte! n of figures.

In the embodimentof the inventionillustrated the shaft 1 rotates and carries an armature 2 o f a dynamo-.electric `machine whose field portion 3 is carried by the casin 4...- ThisI armature shaft Vcarries the Vusua commutator 5 and an assembling quill shaft 6 desirably intervening between the shaft 1 andthe armature vand commutator and held in assemblyV with the shaft 1 by a 'key 7. The preferred form `ofbearing of my invention is illustrated at;` each end; of the shaft;y l Each bearing has a. mounting sleeve 8 that isadapted tolbefslid oif and on the associate reduced Aend 'of the shaftjund, in turn.'` the y inner.- raceway 4of `each -proller` f, bearingfis-adaptedtofbe'shd off and on the 7 sleevel pertaining theretcrzxpThe shaftt-gl,

Leachisleeve 8,v racewayxt)` are oftheseelements from turnin and 'the :corresponding inner assembled to prevent;` either .with respect to theothers by meansof; a.; ey 10 which is desirablv` in the formofa pinthat isre'- groove .11 or face of the haft anda` which passes thrimghg` diametricallv, .alined y openings A in -thesleeve 8 that are al ined `with saidgroqve andthe endsof which pin are received in a 'pair of diametricallyalined grooves 12 in theouter faceSof the, innerraceway. Pins employed to keep 4the pin 10 from slippin Balls or other ,i rollers 1 4 turn upon t 1e innerA raceway` and support,A the outer raccway 15 which .isl supported by a carrier 16 or 161, carrierv wall of the casing pertainingto Vthefdywhich casing is in any desiredvmanner'. 15 is preferably slidably or 161, whereby be separated suitably mounted The outer raccway received in its carrier 16 the entire roller'bearing` may from the balance of the structure. 17 is held upon cach carrier 16, 16l by means of cap screws 18. This cap incloses a space 1.) into which the Shaft l and sleeve pro ject and in which the pin 10 is disposed, this space being preferably lubricating grease for lubricating the'adjacentA roller bearing. Each sleeveS is provided with a flange 20 that projects into a continuation of the 'space that receives the associate raceways and which 'serves to obstruct the passage of lubricating grease reference throughout the different 16 beingjan .,end

Acap

filled -*with from the roller .extended beyond its flange io bearing into the interior of the dynamo-electric machine. Each carrier-has an inward extension 21 that engages the inner face of thecorresponding flange and closely approaches but does not come quite in contact with the portion of the associate sleeve 8 that is inwardly 20. The engagement ofthe elementsr 20 and 21 serves further to *prevent the seepage o'f lubricant into the interior of the dynamo-electric machine;

i zend,1the corresponding cap 17 is removed by unscrewing That portion of the casing of the machine which l surrounds the conunutator is-secured bg' means of ca to thefbalance ofthe casing screws 22. Whenever it 1s sired to in access to thebearing structure at veit er its=screws 18. If the bearing structure is to be disassembled the correamciateg'pin or key 10 is sli e outof thev holes in the projecting outer end freed' of the presence of this 25,

spon'ding `p1ns"13. are taken -out andv the of the: sleeve -8 whereby the ,groove 11-is key or pin -10. The shaft l and each pin 10 are also separable bv-relative movement'. of the latter may key bearis removedffromsleeve 8 the roller ..mg]structurev may be slipped' off the sleeve 8 and the sleeve fenlgl'agement with its ro e 8 itself may also be slipped When a key-10 remains in sleeve 8 the sleeve and r bearing structure may 'be removed 'from'theshaft asa unit, an operationthat not lreq'uire the removal-fof the correspending cap 17 and which .may.occurfor' eiramtplegwhen the portion lof the casing sur-V 40 ronn ing*A the. commutator is removed to gainzaccess tothe 'commutator end of the machlne, tween vther-frame" Sed bethe ball the end flange eofnte extension 21 an bearingstructure that is carried b wallv v16)* causes the removal of t 'e sleeve 8 when the `carrier 16 is removed; for 'if it were notifor the presence of-this flange or some other means foxcoupling or interenx the sleeve y 8 vwith the end wall 16 and e roller bearing structure, the sleeve 8 mightremain u on the shaftv upon the removal of the en wall 16 and the roller bearing structure. The flange 20 and the key 10 also coperate Ato fixedly locate'the pped endwise roller bearing structure upon the corresponding sleeve 8. I do not, however, limit myself to the use of the flange While I have herein shown and particularly described the preferred embodiment of my invention I do not wish to be limited to the precise details as changes may readily be made without departing` from the spirit of my invention, but havlng thus described' my invention I claim as new and desire to secureby Letters Patent the; followin 1. The combination wit a roller bearing having inner and outer raceway members; of a shaft; a carrier removably supporting the outer race wa member and having a continuation exten inwardly toward the shaft; a sleeve slidalllie on the vshaft and on whichy the inner race way member is removably 'engaged and which sleevehas a portion engaging thel inner end of the inner of construction shown continuation of the carrier;A and means for locking the inner race way member, sleeve and shaft together for unitary rotation."

- 2. `The combination with a roller bearing having inner and outer-race ,way'members; of a carrier removably supporting' the outer raceway member;` a" sleeve with which the inner raceway member. is removably engaged a shaft with which the sleeve is removabl the inner race way member, sleeve and sha together for wiitl'y rotation.

y engaged; and means for 3. The combination with a roller bearing` .havin inner and outer race way of a aft;

a carrier forthe outer race way member having a continuation extending inwardly toward theshaft; a sleeve remov- 'ably gaged on thershaft and which removably supports the in ne raoe` way mem-4 ber, said -sleeve havin the mnerend of; they mnerrace way member and the aforesaid inward continuation' of the carrier; andmeans for locking the inner race way member, sleeve and shaft vto ether for' unitary rotation.

. n witness whereof, I hereunto subscribe my name this ber, A. D.` 1916.

' Witnees:

G. L. Camo, E'rra L. WHrra.

members;

g a portion engaging" twenty-first day of Septeml MARK A.- ROSS. 

